Crimped connecting bars for woven wire conveyor belt



May 5, 1959 F. l.. HooPER 2,885,164

CRIMPED CONNECTING BARS FOR wovEN WIRE: coNvEYoR BELT' Filed March 18, 1955 v 1f ZJ/auer United States Patent cRrMrEn coNNEcrrNG BARS EoR wovEN l WIRE coNvEYoR BELT Fred L. Hooper, Cambridge, Md., assignor to Cambridge lWire Cloth Company, Cambridge, Md. v

This invention relates to woven wire fabric such'as used in conveyor belts with convolutions of fiat coils retainedin assembled relation with transversely disposed crimped connecting bars, and in particular a woven 'Wire conveyor belt having crimped connecting bars with the tootli'markings in the bottoms of the crimps providing bearing surfaces of the connecting bars offset approxi-l matelyl to the same angle as the helical angle'of the spiral whereby the convolutions nest in the bottoms of crimped sections and are retained therein lby tension in the belt preventing the wires riding upwardly on the in clined portions of the crimped sections of the connecting bars.

The purpose of this invention is to' provide means for forming crimped connecting wires of woven wire conveyorbelts or other wire fabric whereby alternate portions of crimped sections of the connecting wires include tooth marks to correspond approximately with the angle of the convolutions or spirals.

Connecting wires of woven wire conveyor belts have been crimped to correspond with convolutions of the spirals or coils, however, with the section of a convolu tion on one side of the belt positioned at an acute angle to the longitudinal direction of the belt and the section on the opposite side positioned to the same angle but in the opposite direction a V is formed in each convolution and with the surfaces of the sections of the convolutions bearing against side surfaces of the crimped wire the vertex of a convolution is in spaced relation to the bottom of the crimp and as wear develops with use of the belt the vertexes of the convolutions work into the bottoms of the crimps causing the length of the belt to be increased. With this thought in mind, this invention contemplates providing tooth marks in the sections of the crimps of the connecting wires of a woven wire conveyor belt or other wire fabric whereby the vertexes of the convolutions of the spirals are adapted to nest in the tooth marks in the bottoms of the crmps.

Furthermore, with the crimp formed in a common plane, the vertexes of the convolutions of the spirals or coils have a tendency to ride upwardly on inclined surfaces of portions of the crimps of the connecting wires whereby a belt with a conventional crimp travels laterally and with relatively long belts, such as used in cracker ovens, it is diicult to retain the belt in alignment with the pulleys at the ends. With tooth marks of the crimps offset substantially to the angle of the convolutions whereby the vertexes of the convolutions nest in the bottoms of the crimps the tendency for lateral movement of the belt is eliminated.

The object of this invention is, therefore, to provide means for forming crimped connecting bars of woven wire conveyor belts or other wire fabric whereby accurate alignment of spiral members of the belt is obtained.

Another object of the invention is to provide crimped connecting bars for woven wire fabric in which substan- 2,885,164 Patented May 5, 1959 -tiallyl even :distribution of tension on both spiral mem-y bers and connecting bars is obtained.

'Another important object of the invention is to provide an improved crimped connecting bar for woven wire conveyor belts and the like wherein wear on both the spiral members and crimped connecting bars is reduced to 'a minimum.

Another important object of the invention is to provide improved crimped connecting bars for woven wire conveyor belts or other woven wire materials in which the elimination of wedge eect of spiral members on the crimped connecting bars obtained and the concentrated vstresses in thecrimped 'connecting barsv are reduced to 'a 5 l A further object of the invention is to provide crimped v'connecting bars for woven wire conveyor belts in which vibrations resulting from jumping'in the spirals of belts of this type are eliminated.

A stillhfurthe'r object is to provide crimped connecting bars for woven wireconveyor belts in which preseating of the spirals to `reduce elongation of a belt is obtained.

.And `a still furtheiobject of the invention is to pr vide crimped 'connectingbars for woven wire conveyor belts that'are toothl marked to control lateral movetended through alternately positioned coils of woven wire conveyor 'belts arid'other' wire fabric in which the'crimped portions are provided with; tooth marks to correspond to thef "angle'of Ithe helicall'spiral or" 'convolutionof the coil thereby providing diagonal grooves in the crimped sections of the bars preventing the spiral members from wandering out of position on said crimped connecting wires and providing smoother hinging action resulting from the tooth marks of the crimped connecting bars lying in the path of motion of the spiral members, relative to the crimped connecting bars.

Other features and advantages of the invention will appear from the following description, `taken in connection with the drawing, wherein:

Figure 1 is a plan view of a section of woven wire fabric, such as a conveyor belt showing the crimped connecting bars extended through spirals or coils thereof.

Figure 2 is a cross section through the belt taken on line 2-2 of Figure 1 with the parts shown on an enlarged scale.

Figure 3 is a similar cross section through the belt taken on line 3-3 of Figure 1 also showing the tooth marks in a connecting bar and also with the parts shown on an enlarged scale.

Figure 4 is a cross section taken on line 4-4 of Figure 3 illustrating the crimped connecting wires and showing the convolutions of the coils nested in the tooth marks of the connecting bars.

Figure 5 is a view showing a portion of one of the crimped connecting bars also showing the tooth marks in the bottom of the crimps and with parts broken away.

Figure 6 is a cross section through one of the crimped connecting wires taken on line 6-6 of Figure 5 illustrating one of the tooth marks and with the parts being shown on a still further enlarged scale.

Referring now to the drawing, wherein like reference characters denote corresponding parts, the improved offset crimped connecting bar for woven wire chain belts or the like includes a bar 10 crimped as shown in Figures 1, 4 and 5 forming wavy sections as indicated by the numeral 11 and with grooves 12 formed by tooth marks of teeth of gears with which the crimps are formed po' dem mais bomma 1s or shoe msm swarm atedineeuonuimnl with um whine larly as illustrated in Figure4,thetoothfmsrks 12,91 offset` portionsof `the bars are positionedipexpendcular w the ikioflhwpirabgllinmew ofcrimmsnd linthealternatesetofcrimps. lly the wei-texel of tornestinthe l ofthe mlm upwardlyonsidewrfaces ofthecriups uineonventionalwoventwrexhainbelta. v

`With nested in markslin of the` crimps travels continuously inastraight orprecededlandwixhtheooils and olbet "towalking to the side orlaterahmovemelt.

woven wire conveyor belts of this type may be per lnaently installed with tracks aligned tail pulleys and with takedtp devices eliminated or reduced to a minimum amount of travel.

Die inner parts or surfaces 13 of the crimped sections of the bars are provided `with shoulders 19 and 2l at the ends of the toothnniarks, as illustrated particularlyinFigure 5, the shoulders providing stops or` limiting means preventing lateral `nmxxvverxnent of the `coils on the connecting rods.

Thellize ofthe connecting `Wiresoi' bnn outlhllomf the tootmmarh and radiiof dleerimps'mylbe varied `accordingyto thesizeof the wire used and also thepiteh and spacing `of the convolutons.

It will be understoodthat othermddications, Within the scope of the appended claim, may bemade in the design and arrangement of the parts without departing fromthespirit of theinvention.` n

AWhat ismlaimedisf f har lfor ,connectinz dw lsedcmls' pfwoven wireeonveyofbelt, :hesiter-juste crimpsoffthe bar; beingpositioned to receive'the ends of laltexmle convolution: of the coils, the@ orfshort radius surfaces of the` crimps lyfdisposedlrooves formedby tooth marksin titel` surf faeeethereoandthe arcuate endsof 3o beinglnested in ihesaid grooves ofsthe bar,

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Cited in the` le` of this'patcnt p i STATES PATENTS 

